Version 3.0 WIP

[ItalyPaleAle]

This PR contains all the work being done on the upcoming version 3.0.

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Breaking changes:

• Because parameters from the URL are now URL-decoded, if you were doing it on your application before, you might need to update the code to avoid URL-decoding twice
• The wrap method exported by svelte-spa-router is now considered deprecated and using it will throw a warning; it will be removed in a future version. Please upgrade to the new wrap method exported by svelte-spa-router/wrap, which also supports dynamically-imported routes. See the documentation for route pre-conditions.
• The method nextTickPromise, which was already deprecated, has been removed

New features:

• Add support for dynamically-imported routes (fixes use dynamic routes with wrap #73)
• Restore scroll position on navigation (thanks @liquiddandruff)
• Route pre-conditions can be async functions (fixes router guard and async #125)
• Can now pass static props to a component using the wrap method (fixes Passing additional Props to component #131) (thanks @matt-psaltis)
• Route Loaded event includes the path of the route (fixes Unable to get route key #132)

Changes:

• Decode URL-encoded parameters from URL (fixes URL params should be decoded #107)
• Prefix for nested routers can be a regular expression that will be removed if matched (fixes Nested routes with param prefix #134)
• Using the tick method from Svelte rather than re-implementing it. The method nextTickPromise, which was already deprecated, has been removed.
• svelte-spa-router now uses ES2016 features (async/await) internally and requires a recent-enough browser (most browsers from 2017 onwards should be good), or transpilation with Babel
• Added devcontainer, so you can develop inside a Docker container or GitHub Codespaces

Fixes:

• Tests now run against Chrome running in Docker, so there's no more issues with the CI server updating Chrome

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TODO:

• Update documentation
• Create new samples

[frederikhors]

Amazing! ❤️

[ItalyPaleAle]

Merged! Version 3.0 is coming out now 🚀 🎉 😄